Air quality index [µg/m3]:
excellent ≤ 12
good ≤ 36
lightly polluted ≤ 60
moderately polluted ≤ 84
heavily polluted ≤ 120
severely polluted > 120
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
220021goodexcellent31excellent
210017goodexcellent31excellent
200016goodexcellent21excellent
190010excellentexcellent21excellent
18008excellentexcellent11excellent
17008excellentexcellent11excellent
16008excellentexcellent21excellent
150011excellentexcellent21excellent
14009excellentexcellent21excellent
13006excellentexcellent11excellent
12008excellentexcellent21excellent
11008excellentexcellent21excellent
100010excellentexcellent11excellent
090010excellentexcellent11excellent
08008excellentexcellent11excellent
07006excellentexcellent11excellent
06006excellentexcellent11excellent
05006excellentexcellent11excellent
04005excellentexcellent11excellent
03005excellentexcellent11excellent
02004excellentexcellent11excellent
01004excellentexcellent11excellent
00004excellentexcellent11excellent
23006excellentexcellent11excellent